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Which two products do the parietal cells of the gastric glands make?
APepsinogen and a thin acidic mucus
BHydrochloric acid and intrinsic factor
CGastrin and an alkaline surface mucus
DSerotonin and a bicarbonate solution
Answer & Solution
Correct answer: B. Hydrochloric acid and intrinsic factor
1. Gastric glands in the fundus and body contain parietal cells, chief cells, mucous neck cells and enteroendocrine cells.
2. Parietal cells sit mainly in the middle region of the gland and produce hydrochloric acid and intrinsic factor.
3. The acid activates pepsin and denatures proteins, while intrinsic factor is needed to absorb vitamin B12.
4. Pepsinogen comes from chief cells, and the thin acidic mucus comes from mucous neck cells.
5. Gastrin and serotonin come from enteroendocrine cells, so the last two options name the wrong cell type.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 23 "The Digestive System", section 23.4 The Stomach_
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